(c) (8 marks) K-NN Classifier Figure 4 shows a training set of two classes, depicted using circle (o) and cross (x) respectively. Now the task is to classify two test data points, depicted using (+) and labelled as x1 and x2, into the two classes. Which class(es) will be assigned to x1 and x2 using a KNN classifier, when K=1? How do the results change when K=3? X X x 0 x1 0 0 Figure 4: Classifying x1 and x2 using the KNN classifier